Finishing New England White Pine Floors ... Do I need to apply a conditioner?

[PILOON]

I have had good results using Danish oil with 1st coat thinned a bit for penetration.
I first saw the results in our local lumberyard that did a well traveled area in oil as a demo and it really stood up very well.
They literally swabbed the oil on with a number of applications.
While the finish is not glossy it is very durable.
Since I apply using a sponge I found that the sponge picks up any dust etc and cleans up by simply squishing the sponge.

I have also used sponge/oil application to seal and maintain natural wood wall look rather than varnish..

 

[Budweiser John]

Ditto on the Tung oil. We used it on all the pine wood work, cabinets, and wide plank floors. As stated, labor intensive to the point of being a PITA but absolutely beautiful results.
As life happens and scuffs and scratches occure a little oil on some 600 grit sand paper a few rubs and like it never happened.

B John

 

[longshot47]

I've used everything mentioned, except for the 'rubio' product, and also generally prefer Waterlox in applications such as the unfinished pine mentioned. However, I feel that pretty good results can also be had with marine grade spar varnish or amber shellac [subject to tone, wear and application preferences]
Floors, doors and woodwork in many of the old homes I've worked in still wore original shellac finishes, which were easily restored.